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NCV3843BVDR2G
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Product Detailed Parameters
- Description：IC REG CTRLR FLYBACK 14SOIC
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Type：Transistor Driver
- Function：Step-Up/Step-Down
- Output Configuration：Positive, Isolation Capable
- Topology：Flyback
- Number of Outputs：1
- Output Phases：1
- Voltage - Supply (Vcc/Vdd)：7.6V ~ 30V
- Frequency - Switching：500kHz
- Duty Cycle (Max)：96%
- Synchronous Rectifier：No
- Clock Sync：No
- Serial Interfaces：-
- Control Features：Frequency Control
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：14-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：14-SOIC
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The NCV3843BVDR2G is an automotive-grade analog SMPS PWM controller manufactured by onsemi. It supports Boost and Flyback topologies with a single output. The device operates at a switching frequency of 275 kHz, delivering up to 1 A output current. It features a maximum duty cycle of 96% and a minimum output voltage of 1 V. Operating temperatures range from -40°C to +125°C. The component is housed in an SOIC-8 package and holds AEC-Q100 qualification.
Feature Summary
- Automotive-grade reliability certified under AEC-Q100 standards for harsh environment operation
- Current-mode control architecture utilizing pulse width modulation for precise regulation
- Integrated high-side driver capable of sourcing and sinking peak currents for external MOSFETs
Applications
- Automotive power supply systems requiring isolated or non-isolated DC-DC conversion
- Flyback converter designs for vehicle infotainment and lighting modules
- Boost converter applications for battery voltage step-up in automotive electronics
Procurement Notes
Verify the specific suffix DR2G against official onsemi documentation to confirm tape-and-reel packaging and lead-free status. Ensure the part number matches the exact automotive grade requirements. Cross-reference the datasheet revision to confirm pinout compatibility and electrical specifications before integration into production designs.
Selection Notes
Select this component for applications requiring AEC-Q100 certification and current-mode control in compact SOIC-8 packages. It is suitable for designs needing a 275 kHz switching frequency with high duty cycle capabilities. Consider thermal performance within the specified temperature range when designing heat dissipation strategies for the PCB layout.
Part Context
This part belongs to the NCV3843B series of current-mode controllers designed for automotive power management. It complements other onsemi PMIC solutions by providing flexible topology support for both boost and flyback configurations. The series targets robust performance in demanding vehicular environments with strict reliability standards.
Replacement Considerations
NCV3843BVDR2G serves as the direct automotive-grade equivalent to the commercial UC3843BVDR2G. Verify that substitute parts maintain identical pinouts and AEC-Q100 qualification if automotive compliance is required.
